Use Shields.io.

README.md

@@ -1,9 +1,7 @@
 Mitm.js
 =======
-[![NPM version][npm-badge]](http://badge.fury.io/js/mitm)
+[![NPM version][npm-badge]](https://www.npmjs.com/package/mitm)
 [![Build status][travis-badge]](https://travis-ci.org/moll/node-mitm)
-[npm-badge]: https://badge.fury.io/js/mitm.png
-[travis-badge]: https://travis-ci.org/moll/node-mitm.png?branch=master
 
 Mitm.js is a library for Node.js (and Io.js) to **intercept and mock** outgoing
 network **TCP** and **HTTP** connections.  Mitm.js intercepts and gives you
@@ -26,6 +24,9 @@ Calendar][monday]'s syncing, so if you find a use-case I haven't come across,
 please fling me an [email][email], a [tweet][twitter] or [create an
 issue][issues] on GitHub.
 
+[npm-badge]: https://img.shields.io/npm/v/mitm.svg
+[travis-badge]: https://travis-ci.org/moll/node-mitm.png?branch=master
+
 ### Tour
 - Intercept both **TCP socket connections** (`Net.connect`) and **HTTP
   requests** (`Http.request` and `Https.request`).